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I have put together a typical ls microsquirt system and for the life of me I can't get the afr to idle above 11.5. I am using 80lb deka injectors with a GT45 5.3 and have the base at 43 but no matter what I do to the ve table it doesn't change. I have made sure the ego is good and even relocated it to 12" from turbo out. The firmware is correct and all sensors are calibrated proper The tune is one from denmah that was loaded from sloppy site. I have tried all that I can think of and am looking for advise from someone that has experience with these. Probably something I am overlooking but I have checked closely. If necessary I will send the squirt back to efisource or someone that thinks they can help me. Also the fuel pump ground circuit quit so I have been just hooking up the fuel pump seperately which shouldn't make any difference. Thanks to all that can help
mine was doing that and i found the idle timing needed to be lowered. it was around 18* and i lowered it to around 15 in the idle area i was running in. and reset my idle and tps afterward and now i am around 13 13.5 afr idling.
denmah told me to create a little low timing pocket for the idle and it helped a ton.
try changing it to 3.15 and 3.50 and refire and try to change the fuel numbers
are you under "25" on your VE table near idle? the injector looses resolution at lower openings and has trouble, changing required fuel amount usually can fix this
It might be a dead time problem: if it is too high, no matter how you decrease the fuel quantity needed for the engine, it will use the value of dead time added to the value needed calculated by the table. So it adds an amount of fuel even if you put 0 in the VE table.
Did you use the right time for your injectors?
Itried the lowering of timing and that didn't work also tried advanced idle control also to no avail. Will try the new required numbers and see if that helps. The dead time is at 1.300 as the injectors call for and yes I did see the low(retarded looking low) numbers that seem to adjust it some but that didn't seem to be right. Thanks for input as I will continue to try more things. just seems odd that some people are not having to adjust this bizarre to make them work. Hoping something works as I am at wits end chasing a problem that doesn't seem like it should exist. I will try to post a MSQ tommorrow as I am new to figuring out how to post things. Thanks again and keep the suggestions coming as I am willing to give them a try.
so do you have any suggestions? Do you want me to set it to 3.15 and 1.58 and hope for best or would I be better off with smaller injectors? I had a huge surging problem till I dropped base pressure to 45.
Yes wue is done so no more enrichment. Knew I was going to have to sort things out but this is wrecking my brain and at my age I am about out of brain lol. Keep the suggestions coming as I know someone has the right fix it just isn't me. Rider you have to raise or lower the upper number to change the lower number then burn if good
Pull up your gauges and look at the injector MS. While your at idle and tell us what it is. Then pull up this screen with the motor running and adjust the required fuel.
I run .3 in my required fuel field with 160lb injectors and idle just fine.
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ls microsquirt problems 
